For the U.S., Kerry is to sign the agreement Friday and then President Obama will ratify it before he leaves office in December, a senior U.S. official told CBS News in a conference call this week.
Time Frame. The average dolphin species can stay underwater for as long as eight to 10 minutes; some can remain submerged while holding their breath for 15 minutes. Dolphins breathe through their blowhole, which has a muscular flap that covers it when they go under water, keeping water out of their lungs. Size.
How long can a common bottlenose dolphin hold its breath? On average, a common bottlenose dolphin can hold its breath for 5 - 7 minutes. How does a dolphin sleep? Because they are air-breathing mammals living in the water, dolphins cannot sleep the way that you and I can.